"We're gonna keep fighting to make a difference because I cannot stand to see another mother or father go through this in this city," Annette Nance-Holt said. "When they see that name, I'm talking about the would-be violent gun offenders that you would think twice three times four times multiple times about carrying out a deadly and destructive act with a firearm," Ron Holt said.

Chicago Police Superintendent Eddie Johnson also attended.

Holt's killer, Michael Pace, who is now 24 years old, pleaded guilty to first-degree murder in 2009 and was sentenced to 100 years in prison. However, an appeals court ordered his resentencing. The court found that the judge improperly expressed personal views in a speech he gave at the sentencing.

Pace has been remanded to the Cook County Jail. A date for his re-sentencing could set as early as Thursday.